The creature has the coloration of indigo that reflects light like a dull metal. Its head looks like it is vaguely humanoid in shape, but the body below it grows a pair of large wing in the shape of fins. The body is also covered in long, sharp quills that rattles as the creature glides through the air with ease

The inooa is the predator of the Limbo. Both githzerais and slaadi fear this creature that can travel through unstable areas of Limbo. It makes good use of the gravity and falls towards its victim, breaking through any sort of barricades. Although it has no need to eat, it acts as if it enjoys consuming another creature, which makes others think that the inooa originated from the material realm and remolded to fit the chaotic planes. Usually they are found alone, but occasionally one can find them clustered together in a mob as a result of a mother spawning several children. Even when thrown into another realm that is potentially disastrous, the inooa is usually able to cope with it by changing forms.

Quills (Ex): While biting, the inooa thrashes about, striking with 1d4 of its quills. An opponent hit by an inooa’s quill attack must succeed on a DC 20 Reflex save or have the quill break off in his or her flesh. Lodged quills impose a -1 penalty on attacks, saves, and checks per quill. A quill can be removed safely with a DC 20 Heal check; otherwise, removing a quill deals an extra 1d6 points of damage.